com.google.appengine.api.search

## Class QueryOptions

- java.lang.Object
- - com.google.appengine.api.search.QueryOptions

-     public final class QueryOptions
      extends java.lang.Object

  Represents options which control where and what in the search results to return, from restricting the document fields returned to those given, and scoring and sorting the results, whilst supporting pagination.

  For example, the following options will return documents from search results for some given query, returning up to 20 results including the fields 'author' and 'date-sent' as well as snippeted fields 'subject' and 'body'. The results are sorted by 'author' in descending order, getting the next 20 results from the responseCursor in the previously returned results, giving back a single cursor in the `Results` to get the next batch of results after this.

       QueryOptions request = QueryOptions.newBuilder()
            .setLimit(20)
            .setFieldsToReturn("author", "date-sent")
            .setFieldsToSnippet("subject", "body")
            .setSortOptions(SortOptions.newBuilder().
                .addSortExpression(SortExpression.newBuilder()
                    .setExpression("author")
                    .setDirection(Scorer.SortDirection.DESCENDING)
                    .setDefaultValue("")))

            .setCursor(Cursor.newBuilder().build())
            .build();

- - ### Nested Class Summary

    Nested Classes
    Modifier and Type | Class and Description
    --- | ---
    `static class` | `QueryOptions.Builder` A builder which constructs QueryOptions objects.

  - ### Method Summary

    All Methods Static Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `Cursor` | `getCursor()`
    `java.util.List<FieldExpression>` | `getExpressionsToReturn()`
    `java.util.List<java.lang.String>` | `getFieldsToReturn()`
    `java.util.List<java.lang.String>` | `getFieldsToSnippet()`
    `int` | `getLimit()`
    `int` | `getNumberFoundAccuracy()` Any `Results.getNumberFound()` less than or equal to this setting will be accurate.
    `int` | `getOffset()`
    `SortOptions` | `getSortOptions()`
    `boolean` | `hasNumberFoundAccuracy()` Returns true iff there is an accuracy requirement set.
    `boolean` | `isReturningIdsOnly()`
    `static QueryOptions.Builder` | `newBuilder()` Creates and returns a `QueryOptions` builder.
    `static QueryOptions.Builder` | `newBuilder(QueryOptions request)` Creates a builder from the given request.
    `java.lang.String` | `toString()`

    - ### Methods inherited from class java.lang.Object

      `equals, getClass, hashCode, notify, notifyAll, wait, wait, wait`

- - ### Method Detail

    - #### getLimit

          public int getLimit()

      Returns:
        the limit on the number of documents to return in search results

    - #### getCursor

          public Cursor getCursor()

      Returns:
        a cursor returned from a previous set of search results to use as a starting point to retrieve the next set of results. Can be null

    - #### getOffset

          public int getOffset()

      Returns:
        the offset of the first result to return; returns 0 if was not set

    - #### hasNumberFoundAccuracy

          public boolean hasNumberFoundAccuracy()

      Returns true iff there is an accuracy requirement set.
      Returns:
        the found count accuracy

    - #### getNumberFoundAccuracy

          public int getNumberFoundAccuracy()

      Any `Results.getNumberFound()` less than or equal to this setting will be accurate.
      Returns:
        the found count accuracy

    - #### getSortOptions

          public SortOptions getSortOptions()

      Returns:
        a `SortOptions` specifying how to sort Documents in `Results`

    - #### isReturningIdsOnly

          public boolean isReturningIdsOnly()

      Returns:
        if this search request returns results document IDs only

    - #### getFieldsToReturn

          public java.util.List<java.lang.String> getFieldsToReturn()

      Returns:
        an unmodifiable list of names of fields to return in search results

    - #### getFieldsToSnippet

          public java.util.List<java.lang.String> getFieldsToSnippet()

      Returns:
        an unmodifiable list of names of fields to snippet in search results

    - #### getExpressionsToReturn

          public java.util.List<FieldExpression> getExpressionsToReturn()

      Returns:
        an unmodifiable list of expressions which will be evaluated and returned in results

    - #### newBuilder

          public static QueryOptions.Builder newBuilder()

      Creates and returns a `QueryOptions` builder. Set the search request parameters and use the `QueryOptions.Builder.build()` method to create a concrete instance of QueryOptions.
      Returns:
        a `QueryOptions.Builder` which can construct a search request

    - #### newBuilder

          public static QueryOptions.Builder newBuilder(QueryOptions request)

      Creates a builder from the given request.
      Parameters:
        `request` - the search request for the builder to use to build another request
      Returns:
        a new builder with values set from the given request

    - #### toString

          public java.lang.String toString()

      Overrides:
        `toString` in class `java.lang.Object`